Express the given logarithm as a sum and/or difference of logarithms. Simplify, if possible. Assume that all variables represent positive real numbers.log2 
A. (7 log2x)(2 log2y) - log29
B. 7 log2x + 2 log2y - log29
C. 7 log2x - 2 log2y - log29
D. 7 log2x + 2 log2y + log29
Answer: B
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Factor completely.12x2 - 42x - 24
A. (2x - 1)(6x + 24) B. 6(2x + 1)(x - 4) C. 6(2x - 1)(x + 4) D. (12x - 6)(x + 4)
Solve the system using the addition method. If the system is inconsistent and has no solution, state this. If the system is dependent, write the form of the solution for any real number x.
= 56x = 10 + 9y
A. 
B. 
C. 
D. 
Provide an appropriate response.Four graphs are shown below, labeled G1, G2, G3, and G4. Which of these graphs matches the function described?
(i) The perceived pitch of a fire truck as the fire truck passes.(ii) The length of the shadow of a tree throughout a sunny day in Orlando(iii) The height of a bouncing rubber ball(iv) The temperature of a forgotten cup of coffee
A. (i) G4 (ii) G3 (iii) G1 (iv) G2 B. (i) G2 (ii) G3 (iii) G4 (iv) G1 C. (i) G1 (ii) G3 (iii) G2 (iv) G4 D. (i) G3 (ii) G4 (iii) G2 (iv) G1
Identify the equation as either an identity or not.
= 2 cos 2x
A. Not an identity B. Identity